Two coils have a mutual inductance 0.005 H. The current changes in first coil according to equation $\mathrm{I}={\mathrm{I}}_0$ sin wt where I₀ = 2 A and $\mathrm{\omega }=100\mathrm{\pi }$ rad/sec. The maximum value of emf in second coil is :

• A

  4$\mathrm{\pi }$

• B

  3$\mathrm{\pi }$

• C

  2$\mathrm{\pi }$

• D

  $\mathrm{\pi }$